Table 2. The details of parathyroidectomy and re-parathyroidectomy.
| Autografted forearm group | Neck or mediastinum group | Mann-Whitney U test | ||||
|---|---|---|---|---|---|---|
| N = 63 | N = 27 | P-value | Mean difference | 95% CI | ||
| PTx | Number of removed parathyroid glands (interquartile) | 4.0 (4.0–4.0) | 4.0 (3.0–4.0) | < 0.001 | 0 | -1.0–0 |
| Intact PTH levels on admission (pg/mL, interquartile) | 780.0 (580.0–1,100.0) | 840.0 (647.0–1,100.0) | 0.660 | 40.0 | -160.0–230.0 | |
| Intact PTH levels on POD 1 (pg/mL, interquartile) | 14.0 (9.0–24.0) | 92.0 (53.0–260.0) | < 0.001 | 74.0 | 53.0–147.0 | |
| Serum calcium levels on admission (mg/dL, interquartile) | 10.80 (10.30–11.20) | 10.80 (10.30–11.40) | 0.944 | 0.01 | -0.40–0.37 | |
| Serum calcium levels on POD 1 (mg/dL, interquartile) | 8.90 (8.40–9.70) | 9.10 (8.60–9.40) | 0.465 | 0.14 | -0.30–0.48 | |
| Serum phosphorus levels on admission (mg/dL, interquartile) | 5.40 (5.00–6.40) | 5.70 (4.70–6.20) | 0.839 | -0.10 | -0.60–0.50 | |
| Serum phosphorus levels on POD 1 (mg/dL, interquartile) | 5.40 (4.80–6.30) | 5.80 (4.90–6.20) | 0.465 | 0.20 | -0.30–0.80 | |
| Re-PTx | Preoperative intact PTH levels obtained from the autografted forearm (pg/mL, interquartile) | 3,850.0 (1,220.0–7,864.0) | 463.0 (321.5–1,331.5) | < 0.001 | -2,870.0 | -4621.0 –-1330.0 |
| Preoperative intact PTH level obtained from the non-autografted forearm (pg/mL, interquartile) | 341.0 (238.5–484.5) | 354.0 (199.0–780.5) | 0.236 | 76.0 | -49.0–240.0 | |
| Intact PTH levels obtained from the non-autografted forearm on admission (pg/mL, interquartile) | 408.0 (295.5–587.5) | 616.0 (399.5–883.0) | 0.004 | 200.0 | 61.0–341.0 | |
| Intact PTH levels obtained from the non-autografted forearm on POD 1 (pg/mL, interquartile) | 24.0 (12.00–39.50) | 42.0 (12.00–79.50) | 0.030 | 16.0 | 1.0–35.3 | |
| Serum calcium levels on admission (mg/dL, interquartile) | 10.20 (9.70–10.70) | 10.20 (9.70–11.30) | 0.745 | 0.07 | -0.30–0.51 | |
| Serum calcium levels on POD 1 (mg/dL, interquartile) | 8.90 (8.40–9.70) | 8.90 (8.40–9.20) | 0.951 | 0 | -0.45–0.34 | |
| Serum phosphorus levels on admission (mg/dL, interquartile) | 5.60 (4.70–6.00) | 5.00 (4.50–6.00) | 0.189 | -0.40 | -0.90–0.20 | |
| Serum phosphorus levels on POD 1 (mg/dL, interquartile) | 5.40 (4.60–6.30) | 5.10 (4.90–5.90) | 0.874 | 0 | -0.60–0.50 | |
PTx, parathyroidectomy; POD 1, post-operative day 1; PTH, parathyroid hormone.
Results are presented as median (interquartile range).